Mahasthangarh is an ancient archaeological site in Bogura district, Bangladesh. It is believed to have been the ancient capital of the Pundra Kingdom, mentioned in the Mahabharata and other ancient Indian texts. The site is situated on the western bank of the Karatoya River and is one of the most important archaeological sites in Bangladesh.

The site was first identified in 1931 by Nalini Kanta Bhattasali, a renowned archaeologist from India. Excavations at the site began in the 1930s and have continued to the present day, revealing numerous ruins and artifacts from various periods of history.

The most significant findings at Mahasthangarh include the ruins of an ancient fortification wall, the remains of a Buddhist monastery, a Hindu temple, and several stupas (Buddhist shrines). The site also includes a museum that houses many of the artifacts found at the site, including ancient coins, pottery, and sculptures.

Mahasthangarh is an important pilgrimage site for both Buddhists and Hindus. Every year, thousands of devotees from all over the world visit the site to pay their respects and seek spiritual blessings. The site is also a popular tourist destination, attracting visitors who are interested in exploring the ancient history and culture of Bangladesh.